0,0 → 1,84 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created by dnoakes on Oct 10, 2003 using IntelliJ IDEA. |
*/ |
package com.drew.metadata.jpeg; |
|
import com.drew.imaging.jpeg.JpegProcessingException; |
import com.drew.imaging.jpeg.JpegSegmentReader; |
import com.drew.metadata.Metadata; |
import com.drew.metadata.MetadataReader; |
|
import java.io.File; |
import java.io.InputStream; |
|
/** |
* |
* @author Drew Noakes http://drewnoakes.com |
*/ |
public class JpegCommentReader implements MetadataReader |
{ |
/** |
* The COM data segment. |
*/ |
private final byte[] _data; |
|
/** |
* Creates a new JpegReader for the specified Jpeg jpegFile. |
*/ |
public JpegCommentReader(File jpegFile) throws JpegProcessingException |
{ |
this(new JpegSegmentReader(jpegFile).readSegment(JpegSegmentReader.SEGMENT_COM)); |
} |
|
/** Creates a JpegCommentReader for a JPEG stream. |
* |
* @param is JPEG stream. Stream will be closed. |
*/ |
public JpegCommentReader(InputStream is) throws JpegProcessingException |
{ |
this(new JpegSegmentReader(is).readSegment(JpegSegmentReader.SEGMENT_APPD)); |
} |
|
public JpegCommentReader(byte[] data) |
{ |
_data = data; |
} |
|
/** |
* Performs the Jpeg data extraction, returning a new instance of <code>Metadata</code>. |
*/ |
public Metadata extract() |
{ |
return extract(new Metadata()); |
} |
|
/** |
* Performs the Jpeg data extraction, adding found values to the specified |
* instance of <code>Metadata</code>. |
*/ |
public Metadata extract(Metadata metadata) |
{ |
if (_data==null) { |
return metadata; |
} |
|
JpegCommentDirectory directory = (JpegCommentDirectory)metadata.getDirectory(JpegCommentDirectory.class); |
|
directory.setString(JpegCommentDirectory.TAG_JPEG_COMMENT, new String(_data)); |
|
return metadata; |
} |
} |